I think the TR plug supports the energy stats but the built in driver is so generic it only supports power readings. There is a driver I think that unlocks it, looking now. Found it on his Github, having problems finding the forums post for some reason: https://github.com/bradsjm/hubitat-public/tree/main/ThirdReality . Luckily I have some of these devs usernames memorized 
@jonathanb do you have a post for your driver somewhere? I am having a heck of a time finding anything about it on here.
Wasnt there an app someone was working on the take the power info and calculate the costs?
Found it, [No Longer Maintained] Energy Cost Calculator
Not sure if this app requires the "energy" attribute or if it can estimate based on the "power" and the timing of the events.
Random thought, with just a copy/paste dump of the power events, including the event time and power reading, wouldn't it be pretty easy to just make an excel spreadsheet to calculate the kWh?
